Polishing brush



W. E. WUELKER POLI SHING BRUSH Filed March '7, 1923 j am@ f, 7

@L @H Z/ n. M7 3 y Patented iec. 2, 1924.

FFS

POLISHNG BRUSH.

Application filed March 7, 1923.

T 0 all whom t may concern.' f

Be it known that WILLIAM E. 7m31.- KER, a citizen of the United States,residing at Los Angeles, in the county of Los Angeles and State ofCalifornia, have invented a new and useful Polishing Brush, of which thefollowing is a specification.

This invention relates to a polishing brush that may be used forpolishing` surfaces such as those presented, for example, by the bodyand chassis of an automobile. This brush is adapted to be operated inany suitable manner to effect the polishing` of a surface, and it isespecially well adapted to be connected with the chuck of the cleaningapparatus disclosed in my copending application for patent filed March7, 1923, Serial No. 623,449.

An object of this invention isto provide a brush of this typeconstructed in a manner to insure against scratching the surface beingpolished.

Another object is to provide simple and reliable means for holding afabric cap or cover upon a metallic member of the brush, which metallicmember gives proper contour to the brush end.

The accompanying drawings illustrate the invention:

Figure 1 is a side elevation of a brush embodying the invention, aportion of the stem being broken away to contract the view.

Fig. 2 is a longitudinal mid section of Figure 1. t

Figs. 3 and 4 are transverse sections on the lines indicated by 3-3 and4 4, respectively, Figure 2.

Fig. 5 is an enlarged sectional detail showing the ends of the lacingmember and the clip connecting the same.

Referring to the drawings, there is provided a stem 11 of suitableconstruction for insertion in a chuck of the character, for eX ample,disclosed in the above identified c0- pending application. Assembled ona portion 12 of the stem 11 of reduced diameter, is a plurality of disksnumbered from 13 to 31, inclusive. A greater or less number of disksmay, of course, be assembled on the stem. Though these disks may all beof the same diameter, I prefer that they increase gradually in diameterfrom end to end of the brush so that the brush will be more or lesstapered and pointed in form. If de' sired, the disks 13 to 31 may havetheir Serial No. 623,448.

edges beveled so as to still further carryv out the idea of making thebrush gradually tapered.

Each of the disks 13 to 31 is provided with a hole 32 to accommodate thestem 11. The said stem is provided with a shoulder 33 against whichseats a rigid disk or washer 34 of metal or other suitable material,said disk 34 having a hole 35 to accommodate the stem. The disk 31 abutsthe disk 34. The stein 11 projects beyond the disk 13 and saidprojecting end is threaded, as indicated at 36, to receive a nut 37 anda round faced cup shaped hollow end member 38. After the disks 13 to 31have been assembled on the stem, a washer 39 is placed on the stemagainst the disk 13 and the nut 37 is then tightened against the washer39, thus compressingthe disks 13 to 31 firmly between the washers 34,39.

The end member 38 is tapered on its periphery and rounded at its outerend and is of somewhat less diameter than the disk 13 and is providedwith a threaded socket 40 into which the threaded portion 36 of the stemis screwed. The member 38 is formed of metal or other rigid material anda cap 41 of felt or other suitable fabric is placed over the member 38so as to completely 85 cover the same, the edge of the cap 41 abuttingthe disk 13, and the material of the cap being sufficiently thick sothat the outside diameter of the end adjacent the disk 13 is p the sameas the smaller diameter of said 90 disk in order that the periphery ofthe cap will be flush with the periphery of the disk 13.

Suitable means are provided for securing the cap 41 in place on themember 38, and 95 these means may be constructed as follows:

The member 38 is provided with a series of perforations 42 in itsperiphery and the cap is provided with recesses 43 and with perforations44 at the opposite ends of said 100 recesses, the perforations 44registering with the perforations 42. Before the mem ber 38 is screwedupon the stem 11, the cap 41 will be placed on said member 38 and alacing or thong 45 of leather or other suit- 105 able material will bestrung in and out through the perforations 42, 44 so that the lacingwill be arranged somewhat as indicated in Figure 4, the externalportions of Athe lacing lying in the recesses 43 thus preu@ venting thelacing from rubbing against and scratching the surface being polished.

The enc s ol" the lacing` are brought together and secured in anysuitable manner. ln the instance shown, the ends ot the lacing areconnected by a suitable metal clip 46 which is crimped about the endportions of the lacing, as clearly shown in Figure 5.

In using` the brush, it will preferably be rotated by suitablemechanism, such, for eX- ainple, as that diselosed in the aboveinentioned copending` application. Though this brush may be used torother purposes, it is especially userul tor polishing, and the niaterialet which the dises 13 to 3l inclusive and the cap -l is iliade, may befelt or any other n'iaterial suitable for polishing.

lt will be clear troni the foregoing that, 'when the dises li to 3l andcap l bccoine Worn troni use, they may be very easily reinoved from thestein and neviT ones substituted. By the construction described, thebrush is tapered and niore or less pointed so as to facilitate enteringthe end of the brush into corners and other places that are diflicult ofaccess.

l claiin:

l. ln a polishing brush, the combination of a stein having a Shoulder, aWasher on the stein seated against said shoulder, a nut threaded on thestern, fabric disks between mit/,eee

the Washer and nut, a rounded end member threaded on the stein andcovering the nut, and a polishing cap covering the end nieinber andsecured thereto.

2. ln a polishing brush, the combination or a stein, a rounded endnieniber secured to one end or the stein, a cap covering said endnieniber, ineans securing the cap to the end nieiuliier, and means onthe stein flush With the periphery or the cap forming a polish4 nigsurface.

ln a polishingv brush, the combination or a c ein, a hollow ineinberhaving perforations and threaded on one end of the stein, a cap fittingover and entirely covering the hollow ineinher, and a lacing laced inand out through the perforations and through the cap and havingl its endportions connected together Within the hollow member'.

el. ln a polishing brush, the combination of a stein having a shoulder,a nut threaded on the stein, inefcins between the shoulder and nutforming` a polishing,` member, an end i'neinber covering the nut andsecured to the stem, and a cap secured to the end member.

Signed at Los Angeles, Calif., this 28d day or February, 1923.

VLLlAM E. WUELKER.

